CN2867244Y

CN2867244Y - Crushing tooth of crushing tooth roller

Info

Publication number: CN2867244Y
Application number: CN 200620039301
Authority: CN
Inventors: 张立福; 华凤青; 徐涛; 浦志敏
Original assignee: Baoshan Iron and Steel Co Ltd
Current assignee: Baoshan Iron and Steel Co Ltd
Priority date: 2006-01-26
Filing date: 2006-01-26
Publication date: 2007-02-07
Anticipated expiration: 2016-01-26

Abstract

A crushing toothed roller gear is connected to and fixed in a crushing toothed roller and comprises a gear front portion and a gear root portion. A front angle and a rear angle are respectively disposed at two sides of the gear front portion. The gear root portion has at least four chambers each in a shape of grid approximately. The upper segment of the front angle is vertical or substantially vertical, and the lower segment is arc. The rear angle is arc. The utility model solves the problems of serious abrasion of gear of toothed roller in large-scale sinter crusher during field operation, by reducing the radii (R1 and R2) of the front and rear angles, providing a new partition layout of the chamber and thickening the reinforcement rib. Therefore, the service life of toothed roller for sintering is increased up to 29 months while the cost is reduced by 50%.

Description

Broken discaling roll crushing teeth

Technical field

The utility model relates to the broken discaling roll of sintering machine, the improvement of particularly broken discaling roll crushing teeth.

Background technology

The sintering crushing technology constantly develops both at home and abroad, but thermal crusher does not obviously improve service life.The broken discaling roll of domestic maximum 495 square metres of sintering machines (being commonly called as terrible tooth), as shown in Figure 1, broken discaling roll crushing teeth 10 is connected and fixed on the broken discaling roll 20, and it is a cavity body structure, comprises tooth ends 101, tooth root portion 102; Wherein, tooth ends 101 is a three-cavity structure, and its both sides are arcuate structure, is respectively anterior angle 1011, relief angle 1012; Anterior angle 1011 radius Rs 1 of this fragmentation discaling roll tooth ends 101, relief angle 1012 radius Rs 2 are excessive, be respectively 200mm, 250mm, cause this position wear extent fast, influenced discaling roll service life, only maintain 12 months, each repair spare part cost, maintenance cost expense height, fixed, year maintenance load is big, input cost is too high.

Summary of the invention

In view of the deficiency that the broken discaling roll of above-mentioned existing sintering machine exists, the purpose of this utility model is to design the broken discaling roll crushing teeth of a kind of sintering machine, to address the above problem, its bulk life time is prolonged.

For achieving the above object, the technical solution of the utility model is,

Broken discaling roll crushing teeth is connected and fixed on the broken discaling roll, and it is a cavity body structure, comprises tooth ends, tooth root portion; Wherein, the tooth ends both sides are respectively equipped with anterior angle, relief angle; It is characterized in that tooth ends is at least four cavity body structures, the anterior angle epimere of tooth ends is vertical or near vertical, hypomere is an arc, and the relief angle of tooth ends is an arc.

Again, described tooth ends is provided with eight cavity body structures; At least four cavity body structures of described tooth ends are approximate criss-cross.

The radius of the anterior angle hypomere arc of described tooth ends is 100-150mm; The relief angle arc radius is 75-100mm.

The utility model carries out from new design at the point that influences the discaling roll serious wear:

(1) at the problem (R2) of the relief angle quick abrasion of terrible tooth top portion, increases carbide alloy herein.Intrinsic radius R 2 is little.

(2), increase the carbide alloy of cutting edge at the fast problem (R1) of terrible rake angle cutting edge wear extent.Former design parameter R1 reduces.

(3) owing to thicken, must correspondingly improve weld strength herein, carry out well-designed internal structure in terrible tooth top portion's relief angle and cutting edge hard alloy layer.Because the carbide alloy amount of new discaling roll strengthens, in order to guarantee the weld strength of carbide alloy, the reinforcement thickness of walking crosswise of original tooth top inside is increased.

(4) the tooth top interior layout was fan-shaped originally, and being divided into is three chambeies, arranged also inhomogeneous.Change criss-cross into by design, increased a cavity simultaneously, inner wall thickness thickening.

The utility model is at the on-the-spot operating position of domestic large scale sintering disintegrating machine discaling roll, and the most serious to its wearing and tearing, the most fatal point reasonably designs.Comprise the anterior angle radius R 1 and the relief angle radius R 2 of tooth ends, anterior angle radius R 1, relief angle radius R 2 reduced that for satisfying the requirement of strength of tooth top, for the inner chamber of tooth top, carry out from new partitioning layout simultaneously, reinforcement also thickens.Discaling roll significantly improves service life.Sintering service life even up to 29 months; Simultaneously, because about doubling service life, so the input expense can reduce by 50%.

Description of drawings

Fig. 1 is the cutaway view of existing broken discaling roll;

Fig. 2 is the cutaway view of broken discaling roll crushing teeth of the present utility model.

The specific embodiment

Referring to Fig. 2, broken discaling roll crushing teeth 1 of the present utility model is connected and fixed on the broken discaling roll 2 of sintering machine, and it is a cavity body structure, comprises tooth ends 11, tooth root portion 12; Wherein, tooth ends 11 both sides are respectively equipped with anterior angle 111, relief angle 112; Tooth ends 11 is provided with eight cavity body structures 113, and this cavity body structure 113 is approximate criss-cross; Anterior angle 111 epimeres 1111 of tooth ends 11 are vertical or near vertical, hypomere 1112 is an arc, and the relief angle 112 of tooth ends 11 is an arc; The radius R 1 of anterior angle 111 hypomeres 1112 arcs of described tooth ends 11 is 100-150mm; Relief angle R2 arc radius is 75-100mm.

The utility model is by reducing radius R 1, the R2 at tooth ends 11 anterior angles 111, relief angle 112 places; Increase the carbide alloy layer thickness of tooth ends 11 anterior angles 111 cutting edges simultaneously, cooperate the criss-cross cavity, discaling roll is significantly improved service life.

Claims

1. broken discaling roll crushing teeth is connected and fixed on the broken discaling roll, and it is a cavity body structure, comprises tooth ends, tooth root portion; Wherein, the tooth ends both sides are respectively equipped with anterior angle, relief angle; It is characterized in that tooth ends is at least four cavity body structures, the anterior angle epimere of tooth ends is vertical or near vertical, hypomere is an arc, and the relief angle of tooth ends is an arc.

2. broken discaling roll crushing teeth as claimed in claim 1 is characterized in that described tooth ends is provided with eight little cavity body structures.

3. broken discaling roll crushing teeth as claimed in claim 1 or 2 is characterized in that, at least four cavity body structures of described tooth ends are approximate criss-cross.

4. broken discaling roll crushing teeth as claimed in claim 1 is characterized in that, the radius of the anterior angle hypomere arc of described tooth ends is 100-150mm.

5. broken discaling roll crushing teeth as claimed in claim 1 is characterized in that the relief angle arc radius of described tooth ends is 75-100mm.